The following exhibits are furnished as part of this Current Report on
Form 8-K, pursuant to Item 12:

Exhibit No.

Exhibit

99.1

Press Release of Quanta Services, Inc. dated July 23, 2004

Item 12. Results of Operations and Financial Condition.

On July 23, 2004, Quanta issued a press release announcing its revised
earnings per share estimate for the second quarter ended June 30, 2004. A copy
of the press release is furnished herewith as an exhibit.

The information furnished in this Current Report on Form 8-K, including
the exhibit, shall not be deemed filed with the SEC and will not be
incorporated by reference into any registration statement filed under the
Securities Act of 1933, as amended, unless specifically identified therein as
being incorporated by reference.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.